Are you of German heritage? How are you pronouncing it? Two syllables (ER-man) or three syllables (German "EER-min-uh")? Irmine sounds heavy and "dated" to me (akin to Bertha, Hermine, Irma, Hildegard, Ermentrude/Irmingarde/Irmgard and Gertrude). Have you considered Wilhelmina nn Mina or even Ismene? Also, if you change the first letter to an "E", the name becomes Ermine which is a weasel. It's soft fur is used to make coats and other clothing.

My first impression is Ermine. I would pronounce them the same way so the image I get is of Venus in Furs. It reminds me of Sable. I see some appeal in both names, but I don't think they're that usable. The fur coat image is kind of sexy, lush, wintery cold/cozy warm...but I also think of weasels & of PETA.